Hello sir...
I am using AD9914 DDS for Rising sweep generation. In that i am facing issue in DRTCL pin. I am using arduino uno for control the DRCTL (P102-DRCTL-BUF) by external trigger.
Output of the Arduino uno is 5v, so connected one Buck convertor for 5v to 3.3v logic input for AD9914. In this condition, if i connected the arduino pin output 3.3v to AD9914 DRCTL pin, that time voltage drop is happening(3.3v is dropping to 0.5v.) so AD9914 is not taking the logic for Ramp generation input. Direct 5v output of the arduino also i connected to AD9914, same voltage drop is happening.
Other, single tone freq generation are working fine only.
Please give me a exact reason for this and any ways to debug it aslo. Any other ways to control the DRCTL using arrduino for sweep generation.
